e460. getting the bytes of a generated symmetric key.txt

这里面包含了一百多个JAVA源文件

try {
        // Generate a key
        KeyGenerator keyGen = KeyGenerator.getInstance("DESede");
        SecretKey key = keyGen.generateKey();
    
        // Get the bytes of the key
        byte[] keyBytes = key.getEncoded();
        int numBytes = keyBytes.length;
    
        // The bytes can be converted back to a SecretKey
        SecretKey key2 = new SecretKeySpec(keyBytes, "DESede");
        boolean b = key.equals(key2);  // true
    } catch (NoSuchAlgorithmException e) {
    }